The 75th annualRoyal Windsor Horse Show, which is the U.K.'s largest outdoor horse show, was taking place at the royal residence today. Queen Elizabeth II was seen chatting alongside her husband from outside the vehicle in several photos captured at the event.

IMAGE GETTY IMAGES

IMAGE GETTY IMAGES

The Duke of Edinburgh appeared to be in good spirits, but was not photographed getting out of the vehicle. Her Majesty walked next to the parked car, wearing a floral headscarf, dark sunglasses, and navy blue coat.

"In fact, one of the reasons that Prince Harry has wanted this wedding to happen quite quickly—this is really whirlwind by royal standards—is because his 96-year-old grandfather, the Duke of Edinburgh, is retired now and Prince Harry really wants him to be at his wedding," Nicholl said.

On April 13, Buckingham Palace announced that Prince Philip's health was in much better condition. "Prince Philip left King Edward VII’s Hospital at midday today, following a hip replacement operation last week," the statement read. "He will continue his recovery at Windsor. His Royal Highness would like to convey his appreciation for the messages of good wishes he has received."